Fingerprints Can Reveal Drug Use, Medical History

“A careless touch could be all police or insurance companies need to determine not only your identity, but also your past drug use, if you’ve fired a gun or handled explosives, even specific medical conditions.

“A fingerprint is only good to identify a criminal if you already have their fingerprint on file,” said David Russell, a professor at the University of East Anglia, who, along with Pompi Hazarika, helped developed the new technique, reported in the German journal, Angewandte Chemie. “This will give police new tools to help discover that identity.””